X d dishwashing machine



Wl T/VESSES HENRY VAUDE VERE PUTMAN.

DISHWASHING MACHINE.

APFI .!CATION FILED DEC. I0, 1919.

Patentd Mar. 14, 1922.

3 SHEETSSHEET I.

Mll/ENTOR H Vaude Ems Pu mm A TTOHNEYS HENRY VAUDE VERE PUTMAN.

DlSHWASHING MACHINE.

APPLICATION FILED DEC. 10. 1919.

1 09,557 1 Patented Mar. 14, 1922.

3 SHEETS-SHEET 2.

gin/$ 58855 H -62 V 1/)NVZVT0R em 41 mm.

ATTORNEYS HENRY VAUDE VERE PUTMAN.

DISHWASHING MACHINE.

APPLICATION FILED DEC.10, 1919.

1,409,571 Patented Mar. 14, 1922.

3 SHEETS-SHEET 3- T/VESSES l/VVE/VTOR H fladei gre PuZ'man. W95

A TTORNEYS NITED STAT S PATENT OFFICE.

- msrrwesnme MACHINE Specificatien of Letters Patent. t t 14,1922

Application filed December 10, 1919. Serial No. 343,838.

To (ZZZ whom it may concern: v

Be it known that I, HENRY VAUDE VERE I PUTMAN, a citizen of the UnitedStates, and

a resident of Schenectady, in county of Schethe following is aspecification.

My invention relates to dish washing machines, and an object of myinvention is the provision of amachine in which the dishes areconstantly under' water. and wherein their cleaning is effected bycreating a circulation of water so as to cause the latter to impingeupon the dishes at the most advantageous angle to secure a thoroughcleaning of thedishes with a minimum expenditure of power.

It is also a purpose of my invention to provide a dish washing machineof simple and efficient construction having lubricating means includinggrease cups which are readily accessible to facilitate the lubricationof any particular part of the machine.

It is a further purpose of my invention.

to provide a machine in which the several parts thereof are removable tofacilitate the cleaning of the machine, and furthermore, a dish' washerwhich is constructed to accommodate large and small articles in properposition for cleaning. V i

I will describe one form of dish washer embodying my invention, and.will them point out the novel features thereof in claims. v

In the accompanying drawings E Figure 1 is aview, showing in sideelevation one form of dish washing machine'embodying my invention;

1 Figure 2 is a' vertical sectional view of the machine shown in Figure1 -Figure- 3' is a horizontal sectional view, taken substantially on theline 2-2 o f'Figu'ge 2; and. a i

Figures 4, 5, 6 and 7 are detail views of the machine shown in thepreceding views.

Similar reference characters refer to similar partsin each of theseveral views. 7

Referring specifically to the drawings, T designates a tub formed ofcopper or gelvanized iron and supported by channel steel legs L whichare reinforced adjacent their lower ends by brace bars L. The tub Tcomprises a bottom wall 15 and a side wall 16 which is formed atitsupper edge with a bead'16 against which a .cover C is adapted to restwhen in closed position. The cover C 1s hingedly supported upon the tub.T, as clearly shown in Figure 2, and is probar 21 detach'ably securedat its ends to the tub by means of bolts 22. The bearing 20 1s adaptedto be lubricated by an oil cup 22 which is associated with the bearingin the manner shown in Figure 2. Intermediate its ends, the shaft S isjournaled in a pair of bearings 23 and 24, the latter being secured tothe opposite sides of the bottom 15 by means of rivets 25. The shaft Scarries an impeller designated gene-rally at P and comprising in thepresent instance aseries of spirally disposed vanes 26. A's illustratedto advantage in Figure 4, each vane 26 is hollow and of substantiallycrescent shape formation. The vanes 26 are spaced apart at their"confronting sides so as to provide arcuate channels 26 through whichthe water is ejected axially from the impeller as will be more fullydescribed hereinafter.

As shown in Figure 4, the upper ends of I the vanes 26 are open but areadapted to be with a collar 2'" that carries a set screw 28 which servesto secure the disk to the shaft so that the impeller as a unit willrotate with the shaft. The lower end of the vanes 26 are closed byajdisk 29 which is formed with an axial opening that is spanned by aplurality of blades 30 and a collar 31. As

shown in Figure 2, the blades are inclined to a common center with theirupper ends secured to the wall of the opening of the disk while theirlower ends are secured to and support the collar 31. The collar 31 theshaft S is arranged a tube that extends substantially the entire len thof the impeller, as clearlyshown in igure 2. The

lower end of the tube F is provided with an annular flange f which issecured between the bearings 23 and 24 so as to support the two indefinite relation with respect to the shaft S. The purpose of this tubeis to prevent the water from leaking out through the bearings 23 and 24and incidently avoiding the use of a packing box.

As shown in Figures 2 and 3, the impeller P is surrounded by a rack Rformed of fora? minous material and comprises an inner cylindricalportion 32 and an outer cylindrical portion 33, such portions beingconnected at.

their lower edges by a convex portion 34. This rack R is designed forthe purpose of supporting dishes, table-ware or any other articles ofthis character, so that they will be subjected to the action of thecleaning liquid as it is circulated within the tub by the movement ofthe impeller P. l

Disposed below the arcuate portion 34 of the rack B and supported atintervals by brackets 35 upon the bottom wall 15 of the tub is acircular spray pipe D to which water is adapted to be supplied through apipe 36, as clearly shown in Figures 1 and 3.

The formation, of each of the brackets 35 is clearly shown in Figure 6hile the manner in which the supply pipe 6 is connected to the spraypipe D is clearly shown in Figure 7. As illustrated to advantage inFigure 7, the opposite ends of the pipe D- are connected by a couplingmember (1 that carries a screw d which threadedly engages a head dcarried by a coupling member (13 -The upper end of the pipe 36threadedly engages thecoupling member d and the latter is preferablysecured to the bottom wall 15 of the tub. The head d is provided withsuit-able openings to allow the passage of water from the pipe 36 to thepipe D.

From this arrangement, it will be seen that by properly adjusting thescrew d, the

coupling member d is held in snug engagement with the bottom wall of thetub and the coupling member (P, a rubber washer d being interposedbetween the .tub and coupling member. to effect a water seal between thetwo. Should it be desired'to remove the spray pipe D for cleaningpurposespit is obvious that by withdrawing the screw d from the head thecoupling member (1 and consequently the spray 'pipe D can be readilydisconnected from the pipe 36 and thus removed from the tub. The pipe 36instance is driven by the motor M which is is provided with a valve 36for controlling the passage ofwater through the spray pipe D and whenopened water is projected onto the dishes carried in the rack to efi'ecta rinsing of the same subsequent to the washing operation. The shaft .8in the present suitably supported at the under sideof the tub, asclearly shown in Figiue 2. The

shaft of the motor M is operatively connected to the shaft S through apair of- [beveled gears 37 and 38 fixed to the shafts and the motorshaft, respectively.

' For lubricating the motor shaft and the impeller shaft, 1 providepipes 39, two for the motor shaft and two for the impeller shaft. Eachof these pipes extends to the outer side of the tub and terminate ingrease cups 40 of the ordinary construction by means of which the greaseis fed to the bearings, through the pipes 39. By virtue of thisarrangement, it will be obvious that the grease cups are readilyaccessible and hence lubrication of the several-bearings is easilyaccomplished.

In the operation of the washing machine,-

hot water-is supplied to the tub through a pipe 4l'controlled by a valve41*. When the water in the tub has reached a level sufficient 'tosubmerge the dishes within the tub, the

valve 41* is closed thus discontinuing the supply. Soap is now added andthe dishes are placed within the rack R in the manner indicated in dashlines in Figure 3 wherein it will be noted that they assume a verticalosition. The motor M is now started caus-' ing rotation of the impellerP in the direction of the arrow in Fi re 3. This causes the water inthechannels 26 of the impeller to be forced outwardly on a lin substantially tangential to the periphery of the impeller. As the water isprojected in this manner, a vacuum. is created within the impeller whichdraws the waterrup from the bottom of the tub'so that a constantcirculation of the waterwithin the tub is effected. v i

The drawing of the water into the impeller is materially assisted by'theblades. 30, it being noted that the disposition of the same are such asto elevate the water when the impeller is rotated in the direction ofthe arrow in Figure 3.

As previously'stated, the water is drawn pulses are transmittedto thewater in the direction of the dishes so that with the impeller rotatingat a high speed a vibratory motion of the water is efi'ected with theresult that a cleaning of the dishes may be accomplished in a very fewminutes. This vibratory motion of the water greatly aids During onerotation of the in the dissolution of the grease on the dishes therebypreventing concentration of the grease so that the efiicient operationof the machine is insured at all times.

After the dishes have been thoroughly cleaned, the water, together withthe grease and particles of food, are drained from the tub through apipe 42 by opening a valve 42, whereupon the dishes are rinsed-with.fresh water by opening the valve 36.

As clearly shown in Figures 2 and 3 the impeller P is mountedeccentrically Within the tub T and the rack R is constructedaccordingly. The purpose of this arrange- \ment is to provide a largespace at one side,

of the propeller for the reception of dishes, and a smaller space at theopposite side for the reception of smaller articles, such as glasses,cups and silverware. This arrangement also permits the-motor M to behoused beneath the tub T and provides ample space -for the drivinggears.

-Although I have herein shown {and described only one form of disliwashing ma .impeller.

ing from the spirit of the invention or the spirit and scope of theappended claims.

Having thus described my invention, 1 claim 1. A dish washing machinecomprising,a

tub, and an impeller rotatable within'the tub and comprising aplurality. of crescentshape'd vanes'spaced apart to provide arouatechannels of uniform width which extend tangentiallyfrom the axis of 'theimpeller.

the tub and comprising blades for elevating water and vanes forprojecting the water tangentially of the impeller, a rack for supportingdishes in vertical position and radially of said impeller, and sprayingmeans disposed below said rack and encircling said HENRY VAUDE VEREPUTMAlfI,

